Electrical insect destroyer



Dec. 6,1927. 1,651,999

v. D. COGLON ELECTRICAL INSECT DESTROYER Filed Feb. 12, 1927 2 Sheets-Sheet 1 INvENToR raw gnaw.

Dec. 6, 1927. 1,651,999

V. D. COGLON ELECTRICAL INSECT DESTROYER Filed Feb. 12, 1927 2 Sheets-Sheet 2 TEE-J5 IHVEHTOR K4) Patented Dec. 6, 1927.

UNITED STATES VICTOR DENNIS COGLON, OI" CALGARY, ALBERTA, CANADA.

ELEGTRICAL INSECT DESTROYER.

Application filed February destroyers as described in the present specification and illustrated in the accompanying drawings which form part of the same.

The invention consists essentially of the novel features pointed out broadly and specifically in the'claims for novelty following a description containing an explanation in detail of an acceptable form of the invention.

The objects of the invention are to provide an eflicient insect destroyer of simple construction, and relatively cheap of manufacture; and generally, to improve upon the construction shown in a prior application filed August 5th, 1925, as Serial Number 48,331.

In the drawings, Figure 1 is a fragmentary elevation view of a typical door provided with a device built in accordance with this invention;

Fi ure 2 is an enlarged fragmentary View showing the mode of insulating the horizontal and and vertical electric conductive members from the frame thereof;

Figure 3 is a sectional view taken on line 3-3 in Figure 1;

Figure 4 is a sectional view taken on line 4.-4 m Figure 1;

Figure 5 is an enlarged fra mentary per spective view showing the mo e of staggering the electric conductive members or elements;

Figure 6 is a fragmentary view of the device, the frame being shown in dotted lines;

Fi re 7 shows the mode of insulating the ends of the members 19;

Figures 8 and 9 show modifications in the gonstruction of the electric conductive memers. A

Like numerals of reference indicate corres onding parts in the various fi ures.

eferring to the drawings, 10 esignates a door formed with the vertical members 12, the top cross member 11 and the intermediate cross-member 11*; an open or panel space is provided within'which is suitably secured or fastened the device, designated in its entirety by the numeral 12*.

The device consists of a frame, preferably made of wood, to which is fastened two independent metal screens operatively connected to two terminals of an electric circuit, the screens, when assembled into the frame to form the device complete, being staggered to leave equal distances between the conduc- 12, 1927. Serial No. 167,844.

tive elements. The distance left between any two consecutive elements is made such that, when a fly or other insect attempts to pass therebetween, the distance or gap becomes short-c'ircuited and the fly destroyed.

Each separate screen is made of a plural- -ity of uniformly-spaced longitudinal metal elements or members 17 bent as at 20 and 21, and of the cross-members 1.9 and 18 welded, soldered, or otherwise secured to the members 17. The members 19 are spaced at suitable intervals to impart as much rigidity to the members 17 as possible, consistent with economy; the members 18 are disposed flush with the ends of the members 17. When two such screens are mounted upon or into the Woodenframe to form the device complete, the members 17 are in a same plane; and one screen is applied upon the other in such a way that the members 19 and 18 in each screen are parallel but spaced from one another, as clearly shown in Figures 3 and 5. The members 17, 18 and 19, which are made of some suitable metal, are preferably rectangular in. cross-section, inasmuch as this section facilitates the welding.

If found more economical each screen may be stamped from one single sheet of metal.

In order to insulate one screen from the other corresponding screen, as well as insulating the screens from the frame, suitable insulation must be provided.

A layer of-some suitable plastic insulation material 23 is first applied so as to insulate the cross members 18 from the frame, this layer being applied substantially as shown in Figures 2 and 6, over the entire length of the members; the ends of the members 19 are then wrapped around with the same plastic insulation .material, as shown in Figure 7, wherein the insulation is designated by the numeral 23*.

A strip of insulation material 25, of fairly close texture, is then used to separate and insulate one screen from the other, as shown in Fi re 2, and the strips which are horizonta y-arranged are notched or depressed at 26 to provide a clearance or space to receive the covered ends of the members 19.

In order to facilitate the mounting of the screens in or upon the frame, the members 13 and 14 are formed to a substantially L- cross section, as shown in Figures 3 and 4, thus allowin the screens and the strip 25 to be applie separately and one at a time, after which these are securely retained in place by means of a removable frame 27. This frame 27 is secured to the main frame in any suitable wa metal plates 28.may be secured at intervals to the frame by means of screws 29.

31 and 32 designate two wires connected with the electric circuit, and passing through the frame member 18, one wire bcing operatively connected to any of the members 19 of one screen, and the other \vire being similarly connected to any memher 19 of the other corresponding screen.

In assembling the screens, after the conductive members have been wrapped or insulated as already explained, one screen is laid into the depression or recess formed in the crossscction of the frame, the strip 25 next applied, and then the second screen. The second frame 27 is now applied and pressed down, and the metal clips applied to securely hold said frame in place.

Figure 8 shows a modification in the constructionof the screens, wherein the cross members 19- are offset at intervals to form ridges 20 alternately receiving one member 17 of one screen and clearing the adjacent member 17 of the other scieen, thus permitting of making the members 17 and 17 straight between the end offsets 21*.

Figure 9 shows another modification in the construction of the screens, the two screen units being made exactly alike but assembled into the frame so that the cross-1;,

metallic screens mounted in said recess and separately wired to the source of electric power, a detachable frame fitting over the recessed face of said frame, and means for insulating said screens from one another and from said frames.

2. In an electric insect destroyer, a frame having a recess in one face thereof, a pair of symmetrically formed metal screens mounted in said frame, each of said screens comprising a plurality of Ion itudinal eonductive members and two en cross members and intermediate cross members raised from the plane of said longitudinal mem-' bers, said cross members alone enga g said recess, means for insulating sai means for separately wiring the screens to the source of electric power.

Signed at Toronto, Canada, this 5th day of February, 1927.

VICTOR DENNIS COGLO N.

screens from one another and from said frame, and. 

